That's because the singer is pissed over her treatment by the Academy for being only one of two of the five nominated artists for Best Original Song that was not asked to perform at the live event — David Lang won't be performing Simple Song #3 from Youth either.

Instead, only Lady GaGa, The Weeknd, and Sam Smith were asked to take the stage Sunday — most likely because they're more popular and commercially successful.

The transgender woman took to Facebook to reveal that she's going to boycott the Oscars and gives a long detailed explanation of her feelings saying:

Three years ago, reigning music queen Adele won the Golden Globe for Best Original Song in a Motion Picture for Skyfall, and now Sam Smith is continuing that trend!

The soulful singer and his co-writer Jimmy Napes took home the trophy for the same award at this year's ceremony for Spectre's theme, Writing's On The Wall!

In the process, they beat out pop powerhouses Max Martin (Love Me Like You Do from Fifty Shades of Grey) and Charlie Puth (See You Again from Furious 7), as well as songwriters Brian Wilson and Scott Bennett (One Kind of Love from Love and Mercy), and David Lang (Simple Song #3 from Youth).

In July, father John McCain was diagnosed with stage 4 glioblastoma, an aggressive form of brain cancer, which also claimed Beau's life.

When the 33-year-old began crying, the politician went over and consoled her, adding:

"There is hope... And if anybody can make it, your dad [can]."

Biden is also optimistic about "breakthroughs that are occurring now," regarding potential treatment options and cures.

"There's a lot of things happening. Any of you who have somebody who is diagnosed with gliobastoma, which is about as bad as it gets, there's breakthroughs that are occurring now... And it can happen tomorrow."